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DedPeter [7]
3 years ago
6

Rahim is watching his favorite football team on television. In order to work, the television must be plugged into an electrical

outlet. When the television gets turned on, what is the main energy transformation demonstrated by the television?? heres the answer choices A. heat energy into electrical energy
B. electrical energy into heat energy
C. electrical energy into light energy
D. light energy into electrical energy
Physics
2 answers:
Rasek [7]3 years ago
8 0
I think the answer is B
Anika [276]3 years ago
3 0
Answer:

C.) electrical energy into light energy


Explanation;

The television produces light energy by transforming electrical energy into light energy. Light energy comes from the vibration of electrically charged particles.

Hope this helps :)
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How much power is needed to lift the 200-N object to a height of 4 m in 4 s?
Vitek1552 [10]

Answer: 2000 watts

Explanation:

Given that,

power = ?

Weight of object = 200-N

height = 4 m

Time = 4 s

Power is the rate of work done per unit time i.e Power is simply obtained by dividing work by time. Its unit is watts.

i.e Power = work / time

(since work = force x distance, and weight is the force acting on the object due to gravity)

Then, Power = (weight x distance) / time

Power = (200N x 4m) / 4s

Power = 8000Nm / 4s

Power = 2000 watts

Thus, 2000 watts of power is needed to lift the object.

3 0
3 years ago
50 points!!! Kinetics
iris [78.8K]

Answer:

98 m √

Explanation:

How about s = Vo * t + ½at² ?

s = h = Vo * 2s - 4.9m/s² * (2s)² = 2Vo - 19.6

and

h = Vo * 10s - 4.9m/s² * (10s)² = 10Vo - 490

Subtract 2nd from first:

0 = -8Vo + 470.4

Vo = 58.8 m/s

h = 58.8m/s * 2s - 4.9m/s² * (2s)² = 98 m

3 0
2 years ago
Read 2 more answers
A synthesis reaction occurs when a substance breaks down into two or more simple
max2010maxim [7]
True . this is called a complex substance
4 0
2 years ago
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A heat-conducting rod consists of an aluminum section, 0.30 m long, and a copper section, .70m long. Both sections have a cross-
Igoryamba
Thermal conductions
K= QL/ART
Aluminium T₁ = 10 + 273.15
                    T₂ = 283.15k
205 = 2.0  × 0.30/4× 10⁻⁴ × (T₂ - 283.15)
Copper
385 = Q × 0.70/4×10⁻⁴ ×(433.15 - T₂)
Where T₃ = 160 + 273.15
T₃ = 433.15K
From 2 to 3
205/385 = 0.30/0.70 × 433.15 - T₂/T₂ - 283.15
= 0.53T₂ -150.06 = 181.92 - 0.42 T₂
→ 0.95T₂ = 331.98 ⇒ T₂ = ₂349.45k
T₂ = 76.3°c
=77°c.

6 0
3 years ago
What is an example of a stable system
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1) functions of sine

2) DC

3) signum

4) unit step 

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Happy Studying! ^^


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